79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
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#include <gtest/gtest.h>
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#include <entt/core/hashed_string.hpp>
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#include <entt/entity/registry.hpp>
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enum class my_entity : entt::id_type {};
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TEST(Example, EntityCopy) {
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using namespace entt::literals;
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entt::registry registry{};
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auto &&custom = registry.storage<double>("custom"_hs);
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const auto src = registry.create();
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const auto dst = registry.create();
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const auto other = registry.create();
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custom.emplace(src, 1.);
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registry.emplace<int>(src, 42);
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registry.emplace<char>(src, 'c');
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registry.emplace<double>(other, 3.);
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ASSERT_TRUE(custom.contains(src));
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ASSERT_FALSE(registry.all_of<double>(src));
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ASSERT_TRUE((registry.all_of<int, char>(src)));
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ASSERT_FALSE((registry.any_of<int, char, double>(dst)));
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ASSERT_FALSE(custom.contains(dst));
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for(auto [id, storage]: registry.storage()) {
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// discard the custom storage because why not, this is just an example after all
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if(id != "custom"_hs && storage.contains(src)) {
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storage.emplace(dst, storage.get(src));
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}
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}
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ASSERT_TRUE((registry.all_of<int, char>(dst)));
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ASSERT_FALSE((registry.all_of<double>(dst)));
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ASSERT_FALSE(custom.contains(dst));
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ASSERT_EQ(registry.get<int>(dst), 42);
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ASSERT_EQ(registry.get<char>(dst), 'c');
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}
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TEST(Example, DifferentRegistryTypes) {
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using namespace entt::literals;
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entt::basic_registry<entt::entity> src{};
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entt::basic_registry<my_entity> dst{};
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/*
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TODO These are currently needed to ensure that the source and
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target registries have the proper storage initialized
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prior to copying, as this isn't done automatically
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when emplacing storages (as is done below).
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There is an open issue about this, and these two
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lines should be removed when a fix is properly landed.
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https://github.com/skypjack/entt/issues/827
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*/
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static_cast<void>(src.storage<double>());
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static_cast<void>(dst.storage<int>());
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const auto entity = src.create();
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const auto copy = dst.create();
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src.emplace<int>(entity, 42);
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src.emplace<char>(entity, 'c');
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for(auto [id, storage]: src.storage()) {
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if(auto *other = dst.storage(id); other && storage.contains(entity)) {
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other->emplace(copy, storage.get(entity));
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}
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}
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ASSERT_TRUE((src.all_of<int, char>(entity)));
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ASSERT_FALSE(dst.all_of<char>(copy));
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ASSERT_TRUE(dst.all_of<int>(copy));
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ASSERT_EQ(dst.get<int>(copy), 42);
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}
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